Anti-counterfeiting safety film with dynamic stereoscopic effect based on integrated imaging principle

Abstract

The invention discloses an anti-counterfeiting safety film with a dynamic stereoscopic effect based on the integrated imaging principle. The anti-counterfeiting safety film comprises a micro-lens array layer and a unit image array layer, the unit image array layer comprises a plurality of unit images storing different view image information of an oriented scenario, the micro-lens array layer comprises micro-lenses which are in one-to-one correspondence to the unit images and are used for imaging the unit images. By the aid of the micro-lens array layer, the unit image array layer and the unit images storing the different view image information of the oriented scenario, a three-dimensional scenario of a target object can be restored after the unit images are imaged in a one-to-one corresponding manner by the micro-lenses, three-dimensional stereoscopic display is realized, the safety film has a unique anti-counterfeiting property, and a unit image array has the advantage of difficulty in being copied, so that the anti-counterfeiting property can be effectively enhanced.

Description

technical field [0001] The invention belongs to the technical field of security and anti-counterfeiting, and in particular relates to an anti-counterfeiting security film based on the integrated imaging principle and having a dynamic three-dimensional effect. Background technique [0002] In recent years, counterfeit and shoddy goods have flooded the market in our country, causing great harm. According to statistics, from 1985 to 1994, there were more than 20 counterfeit alcohol poisoning incidents in the country, and more than 5,400 people were poisoned, of which more than 200 people died; Between 27.5 and 34.5 billion yuan; during the five years from 2000 to 2004, a total of 4.242 billion yuan of fake RMB was collected nationwide. The counterfeit and shoddy commodities seized mainly include: food, various brand-name wines, beverages, cigarettes, medicines, health care products, cosmetics, washing supplies, clothing, footwear, film, medical equipment, steel, cement, chemic...

AI Technical Summary

Problems solved by technology

The anti-counterfeiting technology adopted by the fifth-generation RMB has been increasingly unable to meet the anti-counterfeiting requirements

In December 2012 and January 2013, high imitation counterfeit banknotes beginning with "WF66" appeared in Xiamen City, which has aroused people's panic to a large extent, disturbed the market order, and affected the national economy.

[0014] However, since each micro-image in the micro-image array used in this technology is identical, the micro-image only records the target scene appearance and light intensity in a certain direction, and the image displayed through the security film will appear on the same screen. In one plane, it protrudes in front of the safety film or is recessed in the safety film, and changes with the viewing angle, and the resulting image undergoes continuous translational jumps

Since the micro-images are exactly the same, and although the displayed images can highlight the outside of the film or recess the inside of the film, they are still distributed on the same plane, which undoubtedly leads to the hidden danger of duplication of this kind of security film, and makes identification difficult.

Images